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Photoluminescence: Applications01:14

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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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Related Experiment Video

Updated: Apr 13, 2026

Thermal Measurement Techniques in Analytical Microfluidic Devices
08:29

Thermal Measurement Techniques in Analytical Microfluidic Devices

Published on: June 3, 2015

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Remote temperature sensing in microelectronics: optical thermometry using dual-center phosphors.

Mikhail A Kurochkin1, Daria V Mamonova1, Vassily A Medvedev1

  • 1St. Petersburg State University, Universitetskaya nab. 7-9, 199034, St. Petersburg, Russia.

Nanotechnology
|April 11, 2024
PubMed
Summary
This summary is machine-generated.

This study demonstrates optical thermometry for microelectronics using lanthanide-doped gadolinium oxide phosphors. This remote sensing method accurately measures temperature in challenging environments.

Keywords:
dual-centerlanthanidesmicroelectronicsoptical thermometryratiometric sensing

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Spectroscopy

Background:

  • Standard contact thermometers are unsuitable for microelectronic temperature measurements due to environmental and dimensional constraints.
  • Remote thermal sensing offers a viable alternative for non-contact temperature monitoring.
  • Microelectronics demand precise temperature control for optimal performance and longevity.

Purpose of the Study:

  • To develop and validate a novel optical thermometry technique for microelectronic applications.
  • To investigate the use of co-doped Gd2O3:Tb3+/Eu3+ phosphors for ratiometric temperature sensing.
  • To assess the performance of the developed sensor in a realistic microelectronic setting.

Main Methods:

  • Synthesis of co-doped and mixed dual-center Gd2O3:Tb3+/Eu3+ phosphors.
  • Utilized a ratiometric approach based on monitoring emission intensities of Tb3+ and Eu3+ transitions.
  • Tested the phosphor's performance on a surface mount resistor and microcontroller.

Main Results:

  • Achieved ratiometric temperature sensing in the range of 30 °C-80 °C.
  • Demonstrated that the dispersion system type had minimal impact on sensitivity, accuracy, and precision.
  • Successfully proved the applicability of the synthesized phosphors as remote optical thermometers for microelectronics.

Conclusions:

  • Co-doped Gd2O3:Tb3+/Eu3+ phosphors are effective for remote optical thermometry in microelectronics.
  • The ratiometric sensing approach provides reliable temperature measurements in challenging environments.
  • This technique offers a promising solution for non-contact temperature monitoring in miniaturized electronic devices.